Plow



E. DODD March 30, 1937.

PLOW

Filed April 7, 1936 2 Sheets-Sheet 1 35 fir mv-am e c; W" Mark, PM M 4%March 30, 1937.

PLOW

2 Sheets-Sheet 2 Filed April 7, 1956 in M 4 013E122.

Patented Mar. so, 1937 turn s'rATes' ,PAT

Application April 7,1936, Serial No. 73,131

in Canada April 11, 1935 I 7 Claims. (or. 97-98) My invention relates toagricultural implements, more particularly having reference to plows andsimilar V implements employing soil working elements.

One of the objects of my invention is to provide a plow or similardevice for soil working, cultivating or like agricultural pursuits,wherein the soil working elements are pivotally mounted to swingvertically. The elements are normally constrained to travel in soilworking relationship with the ground by spring means and by the draftconnection, there being a fixed limitation to the swing in the onedirection opposed to the draft connection. By this means the soilworking elements are permitted to automatically disengage from anobstruction encountered in the ground without undue strain on theequipment.

An additional feature of the invention lies in the workingassocietion ofelements by means of go draft equalizers that serve to minimize thestrain on the draft connection during disengagement of an element.

The invention contemplates provision of one or more soil workingelements of a character employing'a beam or standard for carrying theelement, and a mounting for the beam by which the same may be movable toswing vertically to allow the soil working elements to pass over ordisengage from rocks and other obstructions to so be encountered in theground. Adjustable means are provided imposing a fixed resistance to thepenetration of the element into the ground and to the draft attachment,the pitch being variable by the adjustment provided.

The draft appliance for the device is attached in opposing relation tothe fixed resistance and in conjunction with the spring means serves toconstrain the element to normally travel in a soil working position. Onencountering an obstruction said element gives to avoid or disengagetherefrom against the resistance of the draft and spring means and isrestored thereby to its normal position on release from the obstruction.

The device further avoids the necessity for use of a release hitch inimplements of this character.

To the accomplishment of the above ends there is provided the novelconstruction and arrangement of parts as hereinafter more fullydescribed and claimed, reference being had to the accompanying drawingswherein like characters of ref? erence indicate like parts throughoutthe several views and wherein:

- 55 Fig. 1 is a plan view of an implement providing -an assembly of.elements embodying therein my improvements.

Fig. 2 is a somewhat diagrammatic perspective view'illustrative of theaction of an element on encountering an obstruction, certain parts being5 end bar 3 and rearwardly secured by a cross 15.

member 5 to the bar 8. I

Intermediately spaced between the side bar 2 and intermediate bar t is afurther bar 5 that includes an integral section 8 attached to the bar"5. There is further provided an angular bar 20 l secured between thebars 2 and 3. This may be constructed of a single piece of material orin sections as illustrated. The whole arrangement is braced by adiagonal brace member tend is designed to form a unitary framestructure. 25

Rearwardly the frame carries a furrow wheel ill on a suitable axlemounted in a block ii, said block being secured to the frame bar i.

Forwardly the frame is supported on rotatable elements including alandside wheel 31 with axle 3o 38 journalled in a bearing bracket 38attached to the frame bar i. On the furrow side a wheel 35 is providedrotatable on a bent axle 35 mounted in a block 3% secured to the framebar 2.

The frame structure is designed to mount a 3.3 series of associatedunits embodying soil working elements, an arrangement of three beingdisclosed in the present showing, it being understood the number ofunits may vary as desired.

The first of such units comprises a transverse 4U rod l2 mounted in.theside bar 2' and angular bar 7. On the rod i2 is pivoted the beam i8of a soil working element it, said beam being braced, against thelateral sway normally encountered by diagonal brace members i5 and It,said members 45 having their forward ends loosely attached to the rod itto pivot with the beam.

Similar units to the foregoing are indicated by like numerals withdistinguishing indices.

The side bars I and 2 carry an elevated tr'ansverse bar H on bracketsl8-l8 suitably secured to' said side bars, said brackets in the presentshowing being integral bent ends of the bar H.

In each of the beams l3, l3 and i 8 is secured or integrally casttherewith, a vertical member or 2 p draw bar respectively indicated forthe several beamsas II, II and Ill Theupperendsofsaid drawbarshavesecured theretorods II, II and 22,

said rods. being forwardly mounted slidable in 5 suitable openings inthe-transverse bar II. The

ends of the rod are' threaded for the reception The draft attachment forthe device includes a l5 draw bar 24, said draw bar being forwardly sus-Y pendedin a bracket 8' attached to the forward bar 3.. The draw barattaches to an ,equaliser 20. the one end of which connects by a rod 1!to the lower end of vertical draw bar ll. p To the opposite end ofequaliser It is attached V by a draft connection 28, a further equalizer20 with a rod}. connecting one'end thereot to the lower endof'vertical'draw bar I. and a rod 8i connecting the other end tovertical draw bar ll. The lower parts of the vertical draw bars havespring tension means applied to maintain the soil working elements innormal working relation to the ground; and further relieve or cushionthe strain on the draft connection when an obstruction is encountered byany one or more of said elements. For the draw bar ll there are providedlinks I! and 83' with interposed connected spring SI, said links beingrespectively attached to .the

forward frame bar 3 and lower portion of the draw bar. A- similararrangement indicated by indice bearing numerals being provided for'thedraw bars I! and is.

"In the operation of the device, when a soil working element encountersan obstruction, such 40 as indicated in Figure 2, the beam is permittedto pivot against the tension of spring 34' and draft connection,allowing the element to clear the obstruction without liability ofbreakage, the element being restored to its working position by theaction of the spring and draft connection. Ob-

viously the neutralizing eifectof a multiple draft connection isimportant when'a strain is imposed by an obstruction. fl

' No release hitgl is required with the device when stones, stumps orother obstructions are encountered and the liability of breakage isreduced to a minimum.

It is thought that the many advantages of an attachment in accordancewith this invention can be understood. and although the preterredembodiment of the invention is as illwtrated and described, yet it is tobe understood thatchanges in the details of construction can be madewhich will fall within the scope of the invention as claimed.

What I claim is:--

1. In a device of described a frame structure, a. soil working unitincluding a beam pivotally mounted in the frame structure.

a vertical drawbar carrledby-thebea'm; afrod connecting the'upper end ofthe draw bar tetheframe structm-e. said mm neeted to the frame and anection to the lower end of the draw bar operative fol-constraining theunit. to move in working relation to the gi 'o und.l v

whlchtheunitmayswing the unit to move in 2.Ina.deviee.ofthecharacterdu'cibeda framestructumasoilwurkingunitinchidingabeampivotallymountedmtheframestmcturaaverticaidrawbarcarriedbythebeamarodformingaslidlng'conneeticnbetweentheupperendof 5thedrawharandtheframmlidconnectionbeing iiflhlemndsaid'opposingailmedresistaneetoadownwardmoveme'nt el flnsunitbsronds .point.adraftconnectiontothelowerendof-the -drawba'r;andaoonnectionbetwemthelower portion of the drawbarandframe structure.said connection including a spring adapted in co-operation with thedraft connection for co the soil working unit to move in workingrelation 15 to the ground. I

. '3. In a device ofthe character describedincludingaframestructmeandoneormoresoilworklngunitaeachofsaiduhitsincludingabeam pivotally mounted in the framestructure to per- 29 mitanupward winaingmovementoftheimit. draw barscarried by said-beams. said draw bars projecting above and below thebeams, a draft connection to the lower part of each of said draw bars,said connection being adapted tonor- 2 mallycons'traintheinittomoveinworkingrela-v tion to the ground and means connected to theupperpart of eachofthedrawbarsfor opposinganxedresistancetothedrsftconnectionatapredetermined point in the pivotalmovement of the; unit.

4.Adeviceasdcilned-inclaim3whereinthe ilxed resistance'for eachof saidunits is in the form of amdhaving aflxedconnection to'the upper end ofthe drawbar and asliding connec- 35tionintheframestructur'e.saidslidingconnection being adapted to permitan upward pivotal movement of the unit and to impart a limitation on thedownward pivotal movement of the unit. g 7 Mb] a 4.0

5. In a device of the character frame. structure, a series of soilworking units mounted in the frame'structure pivoted toswing vertically,each of said units including a vertical draw bar, a draft attachmentineluding'equalisers seciuedtothebeamandmormtedintheframeby 55'vertically.avertical drawbarcarrie dbythelmihadraftcohnectiontothelowerpartofthedrawbar,andmeansformingacohnectionbetweenthelmperpartof thedrawbarand frame,flxedresistancetothedraftcohnectionatapredetermhiedpointinthepivatalmovementoftheunit.- 7 .Adevicessdeilnedinclahn6including a'.

connectionbetweenthelowerpartofthedrawfli wbapandframewithlwlnameansoperate with thedraft in constraining J rporated therein. said'springmeans bdrm tensionedto cm

